Edited Mars Reconnaissance Orbiter image of a sand dune field in Meroe Patera.

Edited Mars Reconnaissance Orbiter image of layers of material on the floor of Ritchey Crater.

Edited Mars Reconnaissance Orbiter image of slopes and bedrock in Candor Chasma.

Edited Mars Reconnaissance Orbiter image of lava flows near the top of Ascraeus Mons.

Edited Mars Reconnaissance Orbiter image of the floor of part of eastern Aram Chaos.

Edited Mars Reconnaissance Orbiter image of a strange hill with lines on Mars.

Edited Mars Reconnaissance Orbiter image of features in Rabe Crater rim.

Edited Mars Reconnaissance Orbiter image of dust devil tracks in northwest Cassia on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes in Hyperborei Cavi. (I love Martian names.)

Edited Mars Reconnaissance Orbiter image of sand dunes in Briault Crater. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a high-latitude intracrater deposit. Cropped, color/processing variant.

Edited Mars Reconnaissance Orbiter Image of a new impact site on Mars.

Edited Mars Reconnaissance Orbiter image of reticulate terrain in north west Hellas Planitia.

Edited Mars Reconnaissance Orbiter image of an exhumed crater in Meridiani Planum. Context image.

Edited Mars Reconnaissance Orbiter image of a section of bedrock on Mars along with hills and sand dunes.

Edited Mars Reconnaissance Orbiter image of layered bedrock on a crater's floor on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of ancient lakebeds in Holden Crater on Mars.

Original caption: Holden Crater was once filled by at least two different lakes. The sediments deposited in those lakes are relatively light-toned where exposed in this observation from NASA's Mars Reconnaissance Orbiter.

Edited Mars Reconnaissance Orbiter image of a subtly-colored region of Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of an ice-filled crater. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a fractured crater in the Ladon Valles Basin.

Edited Mars Reconnaissance Orbiter Image of sand dunes and hills.

Edited Mars Reconnaissance Orbiter image of a linear valley filled in by sand and rocks. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of the ice surface of the Martian south polar residual ice cap.

Edited Mars Reconnaissance Orbiter image of sand dunes named La Jolla. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of intersecting channels near Olympica Fossae.

Edited Mars Reconnaissance Orbiter image of a ridge standing out near the bottom of a crater. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a crater on Mars with a dune field in its middle situated such that it resembles a huge cat eye staring back at MRO. Grayscale (red channel) context image.

Edited Mars Reconnaissance Orbiter context image of of hills (and a nice crater) and swirls in the Hellas Planitia region of Mars. Processing variant.

Edited Mars Reconnaissance Orbiter image of sand dunes in Hyperborei Cavi. (I love Martian names.)

Edited Mars Reconnaissance Orbiter image of part of Innsbruck Crater.

Edited Mars Reconnaissance Orbiter image of gullies in a crater on Mars. Color variant.

Edited Mars Reconnaissance Orbiter image of part of Hellas Planitia with polygonal surface features.

Edited Mars Reconnaissance Orbiter image of scarps on a slop that expose ice underneath the Martian surface. (I assume the ice is water, not carbon dioxide, but I didn't read the caption very carefully.) Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a scarp along the edge of Chasma Boreale.

Edited Mars Reconnaissance Orbiter image of a dark slope streak on Mars. The dark streak is nothing more than an area of a lack of brighter dust, which will be filled in by the ambient dust in the atmosphere over time. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of a sand dune field over layers of bedrock on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of plains on Mars with some strange bumps and markings, looking like badly dried plaster.

Edited Mars Reconnaissance Orbiter image of bedrock in Meridiani Planum. Color variant.

Edited Mars Reconnaissance Orbiter image of a crater on Mars with a dune field in its middle situated such that it resembles a huge cat eye staring back at MRO. Grayscale (red channel) context image. Processing variant.

Edited Mars Reconnaissance Orbiter image of martian terrain and landforms.

Edited Mars Reconnaissance Orbiter image of a scene on Mars.

Edited Mars Reconnaissance Orbiter image of sand on the floor of Pasteur Crater. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of changes (from an earlier image) in sand dunes in Syrtis Major. Color variant.

Edited Mars Reconnaissance Orbiter image of a small crater with possible phyllosilicates in its ejecta.

Edited Mars Reconnaissance Orbiter image of the wall of a crater immediately north of Xainza Crater.

Edited Mars Reconnaissance Orbiter image of part of the Martian south polar cap.

Edited Mars Reconnaissance Orbiter image of the Zea Dorsa region of Mars.

Edited Mars Reconnaissance Orbiter image of a long scarp on Mars.

Edited Mars Reconnaissance Orbiter image of sand dunes and mesas in Iani Chaos on Mars. Color/processing variant.

Edited Mars Reconnaissance Orbiter image of cracked terrain on Mars. Color/processing variant.